Retort for the distillation of oil shalfs



`A L a fdl su ww o n @i 'm which is 0o meint?. by moans of a union bain-m59; 8. The pip@ 19 3S cles as shwm at 1U,

mmap@ ab hf Silvi some composition material such as concrete. It will be appreciated that a pair of these rollers are located in spaced relation beneath the retort and transversely of the retort for properly supporting the intermediate portions of the retort, as shown in Figure l. The extreme ends 15 and 21 are provided with a ring gear as shown at 35 which are maintained in engagement with gears 36 driven synchronously from shafts 37. These shafts extend to any suitable rotating element. These shafts are provided with bearings 38 and 39 .formed in the standards 1 0 and 11.

An opening 4() is shown at one end of the retort for filling the retort with materials or for discharging the spent materials from the same. A. cover plate 4l which has its inner surface ground to neatly fit the adjacent surface of the retort is bolted to the retort to prevent the loss of fluid during operation. The standard ll has a metal boX 42 which has a covered opening 43 With which is adapted to aline the opening 40 of the retort so that the materials are discharged directly through the opening of the box 42.

The operation ot my device is as follows;

The shale is admitted through the opening 40 Jin the retort and when a sutiicient quantity has been supplied the cover 41 is bolted in position and the shafts 37 are revolved whereby the retort will be revolved and the speed of revolution is predetermined and maintained substantially constant. In order to create a vacuum in the retort 16 a vacuum pump may be connected With the pipe 26 with the valve 28 closed and the gas is turned on to the burners afl located below the retort. It Will be' appreciated that the retort may he heated in any suitablev manner as by means of grates or an electric heating resistance secured to the outer surface of the retort and which is placed in communication with a source of current by a revolving contact.

The pressure is kept reduced in the retort during the distillation of the oil shales and during the total time of heating except when steam is admitted so that cracking is reduced and the time of distillation is likewise reduced. By such a` process the quan tity of material handled Within a deiinite time will be greatly increased. The vacuum is continuous from the retort to the condensers. The construction of the retort provides for a uniform heating of the shale and therefore a more uniform and ierect yield of shale oil. ylfhe vapors et the shale oil pass through the openings in the conduit lli? then through the ends of the pipe into the bearing 12 and through the pipe 26 to condensers. the valve 27 beingr open while valve 28 is closed. Near the end of the period ot distillation steam is admitted with lou' pressure to complete the distillation et the almost spent shale and for aiding in the recovery o nitrogenous j 'nfoducts, pariicularly the ammonium compound.

From the pipes 20. steani discharaml into the retort and will sweep the oil Avapors from said retort.

llllhat claim is:

l. A. retort for the distilliuion ol oil sliales comprising a cylindrical meiuher having its ends closed and horizontnll;v positioned. a perforated conduit passing centrally and axially of the cylindrical nien'roer. one cud of the conduit being closed and the other end passing through an end oit the retort and projecting beyond said end oi the rc tort, a conduit passing through the other end of the retort and receiving the closed end ot the perforated conduit, a steam pipe connected with the second mentioned conduit, said second mentioned conduit being;r provided with means to discharge ym into the retort, said last mentioned means including pipes connected with the second mentioned conduit and projecting radially therefrom, the free ends of the conduits he ing open, and means for rotating the cylindrical member.

2. A retort for the distillation oi oil shales comprising a cylindrical member having its ends closed and horizontally posiF tioned. a perforated conduit passingl central ly and axially oi 'the cylindrical 'membra one end ot the conduit being closed and the other end passing throughlan end olE the retort and projecting beyond said end el" the retort, a conduit passing tl'ireugh the other end oi' the retort and receiving the eier-:ed end of the perforated conduit. a steam. pipe connected with the second mentioned cenduit, said second mentioned conduit. lacing provided with means to discharge steam into the retort, said last mentioned means including pipes connected with the second nienltioned conduit and projecting therefrom. the free ends ot the confini being oper..y and means for rotating the cylindr'. il member.

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